Oxidation of polysaccharides yields hydroxyaldehydes and hydroxycarboxylic acids. Aldehydes and carboxylic acids were separately conjugated to 8-aminonaphthalene-1,3,6-trisulfonic acid (ANTS) or tyrosine t-butyl ester (TBT). The ANTS-labeled derivatives were separated by molecular size on PAGE gels and detected by fluorescence. TBT-labeled derivatives were separated by reverse phase chromatography on a C18-HPLC column and analyzed by positive ion electrospray mass spectroscopy (HPLC--MS). This combination of procedures allowed a systematic analysis of carbohydrate oxidation products.
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| http://dx.doi.org/10.1016/s0008-6215(00)00262-7 | DOI Listing |
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